Gem-setting tool



Jan, 23, 1923. L442,%&

8. TOY.

GEM SETTING TOOL.

FILED MAY 5, 1921- 2 SHtETSSHEEI l.

Jan 23, 1923. Lmzmfi.

S. TOY.

.GEM SETTING TOOL.

FILED MAY 5,1921. 2 SHEETS-SHEET 2.

I N VEN TOR.

Shh/FUEL TOY, F BOSTON, IVIAS$ACHU$ETTS.

GEM-SETTING TOOL.

Application filed May 5,

dent of Boston, in the county of Sufiolk and State of Massachusetts, have invented a new and useful Gem-Setting Tool, of

i which the following is a specification, reference. being had to the accompanying two. sheets of drawings, forming part thereof.

My invention relates to gem setting tools,

1921. Serial No. 467,196.

Fig. 7 represents a sectional view taken on. line 7-7 on Fig. 1; i F ig. 8 represents a sectional view taken on line 8'-8 on Fig. 1;

Fig. 9 represents a part sectional and part elevational view of the jawend of the tool. shown in Fig. 1, but shows the jaws of the tool open.

Fig. 10 represents .a diagrammatic view. showing an individualprong bending eletypes, and has for its object to provide a 1 to adjustablyengage the gem retaining elemore particularly of the hand operated mentof the tool engaging with a prong of the ring to bend same over the gem;

Fig. 11 represents a similar view to Fig. 10, but shows the prong bent over the gem by the prong bending elements of the tool;

pair of hand pliers or pincers which is de-. signed to adjustably engage the article of jewelry in which the gem is to be set to hold said article securely in the tool, and further,

View taken through a ring prong showing the gem supporting shoulder usually provided the prong tips ofthe ring; and j i 13 and 14- represent, respectively, the closed and open positions of the prong 7 bending: triggers, corresponding to Figs. 1

ment orsetting of said article under yielding pressure to force said setting to assume the bent or closed position about the gem inserted therein for permanently securing the gem in set relation with the article of Fig. 12 represents an enlarged, sectional jewelry.

Other objects and advantages of the invention will be gathered from the description following herein andconsidered in connection with the accompanying drawing wherein the invention is shown embodied.

The terms employed herein are used in the generic sense to designate the elements illustrated, and are therefore not primarily intended as terms of limitation.

In order to illustrate my invention, 1 have shown in the accompanying'drawings an embodiment thereof, withoutbeing limited thereto, wherein: 1 a a Fig. 1 represents an elevational view of my gem setting tool, showing the same in closed position and supplied with a ring in which a gem is being. set by the tool; s

Fig. 2 represents a plan view ofthe tool shown in Fig. 1; i i

Fig. represents a left end view of Fig. 1;

Fig. 4 represents" a sectional view taken on line '4-1- on Fig. 1;

Fig. 5 represents a sectional view taken on line 5-5 on Fig. l;

Fig. 6 represents a sectional view taken on line 6- 6 on Fig. 1;

and 9, respectively.

Like numerals refer to like parts throughout the several views of the drawing.

The numerals 15 and 16 represent, respectively, the correlated ring supporting and gem setting elements of the plier member,

as shown in Fig. 1, which are pivotally coupled together by the plier stud 17. 15

and 16 represent the hand gripping operating handles of the correlated ring supportlng and gem setting elements 15 and 16, respectively, and which ends are preferably provided with the expansion spring 18 which serves to keep same spread open for normally holding the working jaws of the toel in openposition, as shown in Fig. 9.

the working aws of the tool provide the ring supporting element 15 wlth the ring arm 19,- the ring centering nipple 20, the

adjustable stopstud 21, the clamp lug 22, the adjustable clamp finger 23, and the clamp finger adjusting stud 241 which is provided with the expansion spring 25 and the adjusting nut 26; and the gem setting element 16 with the goose neck 27 which floatably carries in a suitable bearing providedtherefor the hollow spindle 28 of the spider memshown in said Fig. 9. Said spidermember is further provided with the expansion springs-36 which are radially disposed to engage with the. lower portions of the triggers 30 for normally engaging the operating fingers 37 thereof with the cam disc 31.

- 38 represents the prong engaging cams of the triggers 30, which are so shaped to en gage the tips of the prongs P of the rings R, as shown in Figs. 10 and 11 to bend same over the gem or stone S for retaining the latter in set relation with the ring.

. Having thus described the parts of my invention in detail, the manner in which the same may be employed is as follows:

First, it will be noted that the normal setting of the jaws of the tool is the open position, as indicated substantially in Fig. 9; secondly, that the normally setting of the cluster of prong engag ng triggers is the open position, as shown in said Fig. 9 and 14; thirdly that the normal setting of the guide rod 35 is the down position shown in Fig. 9; and'fi'nall'y that the limiting stud 21 maybe adjusted to limit the closing relationship between the aws of the tool.

f The ring R is set on the supporting jaw of'the tool, while the tool is open, as shown in Figs; 1 and 9, with the centering nipple 20 thereof engagedin the setting aperture of the ring and'the clamping finger 23 within the ring and frictionally held clamped against it by the action of the expansion spring 25 the nut 26 being backed off from the stud 24, as shown in Fig. l, to yield clearance between it'and the ring clamping finger 23 to effect said clamping function.

' l Vith the ring thus set in the tool, the gem or stone S in then inserted within the open ring setting (Fig. 9) to set within the prongs P on the shoulders provided there for. as shown in Fig. 12. The operator then grips" the operating handles 15 and 16 and by forcingthem togetheragainst the tension of the spring 18 therebetween, closes the'jaws of the plier elements 15 and 16, which, as may be understood, first the guide rod 35 with the top of the gem or stone S which serves to hold the gem seated in the set and proper position witl the prongs of the ring, which as the jaws continue to close, engage with the cam sections 38 of the prong bending triggers 30 of the tool. The further continued gripping operation of the tool forces the spider incinbcr 539 to floatably ride upward in its bearin provided in the jaw 27. which in so doir forces the operating ends 37 of the trigger 30 to more outward radially on the cam disc 31. and as shown in Fig. 11. such movement of said trigger 30 moves the cam thereof radiall inward towards the ends to center of the ring setting and results in bending the prong tip inward under pressure ag inst the gem or stone H. and in that manner permanentl}. secures the latter in set position with the ring. As may be understood. all of the prong tips are bent in around the stone practically simultaneously as the triggers of the device are all operated together. The limiting stud 21 may be adjusted to abut the jaw 27 of the plier element 16 at any desired point to prevent the possible jamming of the prong tips under excess ve pressure applied thereto.

The ring supporting jaw may be adjusted to support any size of ring. The floating tension rod, 353 engaging with the gen'i or stone. as above described, serves to reta n the latter in position with the ring FOit tin both before the triggers engage the 1 of the ring and during the bending raiion of said prongs; thus insuring inst the possibility of the gem or stone becoming unseated previous to or dur ngthe prong bendinginterval.

It will be understood. that while l have shown in the drawings a scissor type of plier employed with the invention. I do not wish to be limited against using other types which may be suitable or equally advantageous, as for example, the so-called parallel jaw types of pliers.

It will also be understood that the cluster of trigger cams when closed form an uuin terrupted surface. that is to say, the trip cam surfaces are preferably finished oil -ircumferentially or annularly to afford the latter the same relative bending eii'ect. rcgardless of the radial position therein as sinned by the prong tip; thus when the trigger cams are closed in they substantially form an annular socket for receiving the prong tips of the ring therein. and will handle settings of any number of prongs without limit.

The tool provides a convenient instrument for jewelers for rapidly and secure y setting gems in ring settings. and is so drsigned and constructed as to enable the jeweler to watch the work as it is progress ing therein to insure an absolutely good re sult.

While I have herein shown and described a specific, practical embodiment of my in- .l. l. O

7 part. 7

Claims:

Havingthus described my invention, what lclaimasnewisi :4

1. A plier device having one jaw provided with means for securely supportin and centering a ring setting thereon, and the other jaw provided with yieldable pressure trig gers adapted to engage the prongs of said ring setting for bending same over the gem to be retained in said ring setting; and means for normally holding said jaws in open position.

i 2- A plier device having one jaw provided with means for securely supporting and centering a ring setting thereon, and the other jaw provided with yieldable pressure triggers adapted to engage the prongs of said ring setting for bending same over the gem to be retained in said ring setting; means for normally holding said jaws in open position; and means for limiting the closing position of said jaws.

3. A plier device having one jaw provided with means for securely supporting and centering a ring setting thereon, and the other jaw provided with yieldable pressure triggers adapted to engage the prongs of said ring setting for bending same over the gem to be retained in said ring setting; and tension means provided the latter jaw, adapted to engage with the gem for temporarily retaining the same in set position in the setting previous to and during the prong bending operation of the tool.

A. A lier device having one jaw provided wlth means for securely supporting and centering a ring setting thereon, and the other jaw provided with yieldable pressure triggers, adapted to engage the prongs of said ring setting for bending same over the gem to be retained in said ring setting; tension means provided the latter jaw, adapted to engage with the gem for temporarily retaining the same in set position in the setting previous to and during the prong bending operation of the tool; and means for normally holding said jaws in open position.

5. A plier device, having one jaw provided with means for securely supporting and centering a ring setting thereon, and the other jaw provided with yieldable pressur triggers adapted to engage the prongs of said ring setting for bending same over the gem to be retained in said ringsetting; tension means provided the latter jaw, adapted to engage with the gem for temporarily retaining the same in set position in the setting previous to and during the prom bending operation of the tool: means for normally holding said jaws in open position: and means for limiting the closing position of said jaws.

6. A plier device, having one jaw thereof provided with adjust-able means for engaging and centering various sizes of ring settings i 'or temporarily securing the latter in said jaw, and the other jaw thereof provided with a floating pressure applying member having a cluster of radially operated cam members adapted to engage the prong tips of the ring supported on the first mentioned jaw for bending the same inward onto the gem or stone set in said ring to permanently set the former with the latter.

7. A plier device, having one jaw thereof provided with adjustable means for engaging and centering various sizes of ring settings for temporarily securing the latter to said jaw, and the other jaw thereof provided with a floating pressure applying member having a cluster of radially operated cam members adapted to engage the prong tips of the ring supported on the first mentioned jaw for bending the same inward onto the gem or stone set in said ring to permanently set the former with the latter; tension guide means car-riedin said floating pressure ap plying member, adapted to engage the gem set in the ring setting for temporarily retaining the same in set position in the ring previous to and during theprong bending operation of the tool.

8. A plier device, having one jaw thereof provided with adjustable means for engaging and centering various sizes of ring settings for temporarily securing the latter to said jaw, and the other jaw thereof provided with a floating pressure applying member having a cluster of radially operated cam members adapted to engage the prong tips of the ring supported on the first mentioned jaw for bending the same inward onto the gem or stone set in said ring to permanently set the former with the latter; tension guide means carried on said floating pressure ap plying member, adapted to engage the gem set in the ring setting for temporarily retaining the gem in set position in the ring previous to and during-theprong bending operation of the tool; and means for normally retaining the jaws of the tool in open position.

9. A plier devic having one jaw thereof provided with adjustable means for engaging and centering various sizes of ring settings for temporarily securing the latter to said jaw, and the other jaw thereof provided with a floating pressure applying member having a cluster of radially operated cam members adapted to engage the prong normally retaining the jaws of the too] in open position; and means For udjuslnhiv limiting the closing relationship of said jaws.

In testimony whereof, I hereunto afiix my 5 signature this third day of May 1921.

SAMUEL TOY.

Witness DAVID LICHTENSTEIN, 

